IWC Portugieser Portugieser Constant-Force Tourbillon Double Moon Platinum / Green

Reference IW5901-10

IWC Portugieser Constant-Force Tourbillon Double Moon Platinum / Green

About this watch

The IWC IW5901-10 Portugieser Constant-Force Tourbillon Double Moon Platinum / Green is a masterpiece that marries technology with art. This stunning timepiece radiates elegance with its platinum case and green sunburst finish, making it an instant conversation starter. The 46 mm diameter case is bold yet refined, designed to fit comfortably on the wrist. The dial features Arabic numerals, feuille hands, and a mesmerizing combination of moonphase indicator and constant force mechanism display. At the heart of this watch is the IWC manufactured Caliber 94800, showcasing the brand's commitment to excellence with its 43 jewels and 18,000 vibrations per hour frequency. The patented constant force mechanism ensures stable amplitude, while the tourbillon escapement provides a unique 1-second jump. With a 96-hour power reserve, this watch offers reliability that few can match. Its 30 meters of water resistance means it can handle splashes and light rain, although it's not designed for underwater adventures. The limited edition of only 5 units adds a layer of exclusivity, making owning this piece a badge of honor for serious collectors.
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Key Features

  • IWC Caliber 94800 movement
  • Platinum case with green sunburst finish
  • 46 mm diameter and 13.40 mm height
  • 30 meters water resistance
  • Limited edition of only 5 units
  • Patented constant force mechanism
  • Tourbillon escapement with unique 1-second jump

Specifications

Brand
IWC
Family
Portugieser
Model
Portugieser Constant-Force Tourbillon Double Moon Platinum / Green
Reference
IW5901-10
Movement
94800
Movement Features
  • Minutes, Hours, Small Seconds
  • Moonphase
  • Constant Force Mechanism, Tourbillon Escapement, Power Reserve Indicator
Case
46mm
Dial Color
Green
Crystal
Sapphire
Water Resistance
30

Current Listings

[WTS] FURTHER REDUCED IWC Portugieser Jubilee Ref. 5441 – 18k Rose Gold – Limited Edition 006/500

FURTHER REDUCED IWC Portugieser Jubilee Ref. 5441 – 18k Rose Gold – Limited Edition 006/500

IWC - 5441 · $12,899
This IWC Portugieser Jubilee Ref. 5441 is a limited edition of 500 pieces produced in rose gold to celebrate the 125th anniversary of International Watch Company. It features a classic design language inspired by the original 1930s models, including a silver dial and manual-winding IWC Caliber 9828 movement.

  • Condition: Overall very good vintage condition, minor scuffing around the ~10 o'clock area on the crystal
  • Case Size: ~42 mm
  • Diameter: ~42 mm
  • Movement: IWC Caliber 9828, manual wind
Posted at
Apr 28, 2026, 9:28 PM
Active
View listing on r/WatchExchange
[WTS] 2020 IWC Portugieser Yacht Club "Orlebar Brown" - IW390704 - Full Set Priced to Fly

2020 IWC Portugieser Yacht Club "Orlebar Brown" - IW390704 - Full Set Priced to Fly

IWC - IW390704 · $7,500
A beautiful summer timepiece by IWC, the Portugieser Yacht Club Chronograph Edition 'Orlebar Brown' has a fresh and crisp aesthetic while maintaining its classic iconic design.

  • Condition: great preowned condition with minor signs of wear throughout the case, caseback, case sides, bracelet, and clasp
  • Year: 2020
  • Case size: 44mm
  • Crystal type: sapphire
Posted at
Apr 27, 2026, 7:20 PM
Active
View listing on r/WatchExchange
[WTS] IWC Portugieser Chronograph IW371624 Dune Dial Full Set

IWC Portugieser Chronograph IW371624 Dune Dial Full Set

IWC - IW371624 · $7,497
This pre-owned IWC Portugieser Chronograph features a stainless steel case with a dune dial and black alligator strap. The watch comes in a full set, including box, papers, and original contents.

  • Condition: Very good
  • Case size: 41 mm
  • Case material: Stainless steel
Posted at
Apr 27, 2026, 9:52 AM
Active
View listing on r/WatchExchange
[WTS] IWC Portugieser Regulateur. IW544401. Box, Papers...

IWC Portugieser Regulateur. IW544401. Box, Papers...

IWC - IW544401 · $6,600
IWC Portugieser Regulateur for sale, complete with box and papers.

  • Box: true
  • Papers: true
Posted at
Apr 25, 2026, 11:42 AM
Active
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[WTS][US] IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW

[US] IWC Portugieser Automatic 40 - Silver Dial - 40mm - IW358312 - BRAND NEW

IWC - IW358312 · $7,000
This IWC Portugieser Automatic 40 is a brand new timepiece with a silver dial and 40mm case. It features an automatic movement and comes with various accessories such as a box, manual, warranty booklet, microfiber cloth, link tools, and digital transferable warranty.

  • Condition: Brand new, unworn
  • Case size: 40mm diameter
Posted at
Apr 25, 2026, 9:21 AM
Active
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[WTS] IWC Portugieser Chronograph IW371624 Dune Dial Full Set

IWC Portugieser Chronograph IW371624 Dune Dial Full Set

IWC - IW371624 · $7,497
A pre-owned Portugieser Chronograph with a dune dial, featuring an automatic movement and a stainless steel case.

  • Condition: Very good
  • Case size: 41mm
  • Case material: Stainless steel
  • Movement type: Automatic
Posted at
Apr 20, 2026, 9:05 AM
Active
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[WTS] IWC Portugieser Tourbillon Mystere, White Gold IW504207 ♦️Lightly Used Undated♦️

IWC Portugieser Tourbillon Mystere, White Gold IW504207 ♦️Lightly Used Undated♦️

IWC - IW504207 · $30,457
This listing is for an IWC Portugieser Tourbillon Mystere in White Gold, featuring a tourbillon mechanism. The watch has been lightly used and comes with the full set of box and papers.

  • Condition: Lightly Used
  • Material: White Gold
  • Comes With: Full set (box & papers)
Posted at
Apr 20, 2026, 5:38 AM
Active
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[WTS] IWC Schaffhausen Portugieser. Blue Hands/Indices. 40mm. IW358312. Card Included..

IWC Schaffhausen Portugieser. Blue Hands/Indices. 40mm. IW358312. Card Included..

IWC Schaffhausen - IW358312 · $4,950
This IWC Portugieser is a gorgeous watch with an inhouse movement, available for sale. It features blue hands and indices on a 40mm case.

  • Case size: 40mm diameter
  • Movement type: inhouse
Posted at
Apr 19, 2026, 11:42 AM
Active
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[WTS] IWC Portugieser Jubilee Ref. 5441 – 18k Rose Gold – Limited Edition 006/500 – REDUCED PRICE

IWC Portugieser Jubilee Ref. 5441 – 18k Rose Gold – Limited Edition 006/500 – REDUCED PRICE

IWC - 5441 · $13,249
A limited edition IWC Portugieser Jubilee Ref. 5441 in 18k rose gold produced to celebrate IWC's 125th anniversary, featuring a manual-winding movement and classic Portugieser design language.

  • Condition: Overall very good vintage condition, minor scuffing around the ~10 o'clock area on the crystal.
  • Case Size: ~42 mm
  • Dial Color: Silver
  • Movement Type: Manual winding
Posted at
Apr 18, 2026, 2:43 PM
Active
View listing on r/WatchExchange